>>I got nailed by this obscure feature and I feel very lucky to have discovered
>>the fine print at the bottom of the REPLACE help before spending hours trying
>>to figure out why the replace wasn't happening.
>
>
>Think of it this way. You're past the last record in a table in the current
>area (IE, you're at EOF()). Now, when you try to do a REPLACE in this table,
>what are you replacing? That should give you your answer...

Or more to the point,

USE tableA IN 0
USE tableB IN 0
USE tableC IN 0

SELECT tableA
GO BOTTOM 
STEP

REPLACE tableA.field1 WITH "fred", ;
        tableB.field2 WITH "barney", ;
        tableC.field3 WITH "wilma"

What happens?